Accession Number:

ADA254304

Title:

Digging Frozen Ground with a Ripper Bucket

Descriptive Note:

Special rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Report Date:

1992-06-01

Pagination or Media Count:

13.0

Abstract:

To improve the digging capability of small excavators and backhoes in hard and frozen ground, a bucket of special design was selected from among a variety of attachments. This bucket cuts and rips the frozen ground, as lip teeth and a set of staggered teeth attached to the back of the bucket move through an arc during bucket rotation. Digging observations were made using a small mini-excavator and an Army tractor SEE with a rear-mounted backhoe. Frozen ground was excavated at several sites under impossible conditions for a conventional bucket. A large variation in excavation rates 3 to 30 cu. ydhr2. 3 to 23 cu. mhr was observed, depending on material type, frost thickness, sharpness of the cutters and operator experience.

Subject Categories:

  • Soil Mechanics
  • Construction Equipment, Materials and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE